(noun) a spanktank which is filled to capacity. May be used to emphasize that one has made a sizeable contribution to one's amount of masurbation materials, or that one has not unloaded a sperm load in too long.

I just finished a download bender of tube sites, so I'm running on a Full Spank.

He must've had a Full Spank, because he blew a load of ropey dicksnot all over the place!